Turn it on and hold Command-R until you hear the startup chime or see the Apple logo.If your Mac boots up and just sits in a gray screen or you just get spinning wheel of death from the start, try booting in Recovery Mode. What to do if macOS Big Sur won't restart Boot in Recovery Mode Unplugging it should be the last thing you try since you could end up bricking it altogether. If your Mac won't even respond to the power button, then as a last resort, you can simply unplug it. First, try by holding down the power button on your Mac and waiting until it shuts off and turns back on. If you can't wait or waiting just doesn't work, you'll have to force a reboot.

It might work itself out after half an hour. If you have time, leave your Mac for a while. What if macOS Big Sur freezes or stops responding? Follow the steps to install macOS Big Sur the same way you would through System Preferences.Click Download under the macOS Big Sur download section.Navigate to Apple's Big Sur download page on your Mac.Then, try downloading it directly from Apple's software downloads page. If you're trying to download macOS Big Sur and it seems to just hang and not calculate or appear to be downloading or installing, first double-check to make sure your internet connection is working and your Mac is connected to the internet. What to do if Big Sur doesn't seem to be downloading or installing If it's a single app, try uninstalling and reinstalling or checking for updates. If, however, you're only having trouble when using certain apps, then it's best to try and isolate the issue to just those apps. If it's in downloading or installing macOS Big Sur, then fair enough. Before troubleshootingįigure out where the problem lies. Here are some things you can try to figure out what's wrong and perhaps alleviate some of your macOS woes. There are a few standard troubleshooting steps you can try before burning everything to the ground. If you've just installed, or are trying to install, macOS Big Sur, you may be experiencing some issues.

Mac spinning wheel of death on startup